Klaske van Sluis

62 3.5. Conclusion Appendix II Correlations between the outcome measurement instruments for post-operative time points (T1-T3) show statistically significant correlations between Perc. Voice SLP and VHI-10 ( p <.001), Perc. Voice pt and VHI-10 ( p <.001), Perc. Voice pt and AVQI ( p <.001), Perc. Voice pt and Perc. Voice SLP ( p <.001), and Perc. Voice SLP and AVQI ( p <.001). No statistically significant correlation is found between AVQI and EQ-5D-5L ( p =.228), AVQI and VHI-10 ( p <.017), and between VHI-10 and EQ-5D-5L ( p =.021). Figure 3.5: Correlation between outcome scores for the post-laryngectomy time- points. Numbers indicate T (T1-T3). Y X + (1|Subject) R^2: pseudo R2 (explained variance fixed factors); p: > Chi square (ANOVA vs Y 1 + (1|Subject)). Abbre- viations: 0= pre-laryngectomy; 1= 3 months post-laryngectomy; 2= 6 months post- laryngectomy; 3= 12 months post-laryngectomy.